What does the Nom say? An algorithm forcase disambiguation in Hungarian

Noémi Ligeti-Nagy1, Andrea Dömötör1 and Noémi Vadász2

January 7, 2019

1MTA–PPKE, Hungarian Language Technology Research Group2Research Institute for Linguistics, Hungarian Academy of Sciences

Aims

• Case disambiguation of nominals without overt case marking

• In Hungarian caseless nominals may be:• subject• unmarked posessor• argument of a postposition• element in vocative case• modifier of another nominal• part of a proper name• (part of a) nominal predicate

Method

• Rule-based

• Follows the principles of a psycholinguistically motivated parser

• Back-looking rules: use the previously processed elements

• Forward-looking rules: use a two-token wide look-ahead window

Results

Precision 77.82%Recall 79.30%F-measure 78.55%